Evidence map›Paper›PMID 32029229›Full record

ArticleMolecular metabolism2020

Pharmacological antagonism of the incretin system protects against diet-induced obesity.

Berit Svendsen, Megan E Capozzi, Jingjing Nui, Sarah A Hannou, Brian Finan, Jacqueline Naylor, Peter Ravn, David A D'Alessio, Jonathan E Campbell

Open access · goldAbstract read
In one paragraph

Article in Molecular metabolism, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
5.4field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 63 citations in OpenAlex.

  1. Article
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  3. GLP-1 physiology and pharmacology along the gut-brain axis.The Journal of clinical investigation · 2026
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  10. The role of GIPR in food intake control.Frontiers in endocrinology · 2025
    Review
  11. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Berit SvendsenDuke Molecular Physiology Institute, Duke University, Durham, NC, USA.
Megan E CapozziDuke Molecular Physiology Institute, Duke University, Durham, NC, USA.
Jingjing NuiDuke Molecular Physiology Institute, Duke University, Durham, NC, USA.
Sarah A HannouDuke Molecular Physiology Institute, Duke University, Durham, NC, USA.
Brian FinanNovo Nordisk Research Center, Indianapolis, IN, USA.
Jacqueline NaylorAstraZeneca, R&D BioPharmaceuticals Unit, Cardiovascular, Renal and Metabolism, Cambridge, United Kingdom.
Peter RavnAstraZeneca, R&D BioPharmaceuticals Unit, Antibody Discovery and Protein Engineering, Cambridge, United Kingdom.
David A D'AlessioDuke Molecular Physiology Institute, Duke University, Durham, NC, USA; Department of Medicine, Division of Endocrinology, Duke University, Durham, NC, USA.
Jonathan E CampbellDuke Molecular Physiology Institute, Duke University, Durham, NC, USA; Department of Medicine, Division of Endocrinology, Duke University, Durham, NC, USA; Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA. Electronic address: jonathan.campbell@duke.edu.
Duke University · USAstraZeneca (United Kingdom) · GBNovo Nordisk (United States) · US

Funding

Mechanisms of insulin secretion mediated by alpha cellsR01DK123075 · NIDDK · DUKE UNIVERSITY · PI CAMPBELL, JONATHAN E · 2019 to 2023
$1.9M
Incretin Action in Physiology and DiabetesR01DK101991 · NIDDK · DUKE UNIVERSITY · PI D'ALESSIO, DAVID A. · 2014 to 2018
$1.8M
The Role of Islet DPP4 for Regulation of Glucose HomeostasisF32DK116542 · NIDDK · DUKE UNIVERSITY · PI CAPOZZI, MEGAN · 2018 to 2020
$188k
NIDDK NIH HHS F32 DK116542NIDDK NIH HHS R01 DK101991NIDDK NIH HHS R01 DK123075
6 · The paper itself

Abstract

objectiveGlucose-dependent insulinotropic polypeptide is an intestinally derived hormone that is essential for normal metabolic regulation. Loss of the GIP receptor (GIPR) through genetic elimination or pharmacological antagonism reduces body weight and adiposity in the context of nutrient excess. Interrupting GIPR signaling also enhances the sensitivity of the receptor for the other incretin peptide, glucagon-like peptide 1 (GLP-1). The role of GLP-1 compensation in loss of GIPR signaling to protect against obesity has not been directly tested.

methodsWe blocked the GIPR and GLP-1R with specific antibodies, alone and in combination, in healthy and diet-induced obese (DIO) mice. The primary outcome measure of these interventions was the effect on body weight and composition.

resultsAntagonism of either the GIPR or GLP-1R system reduced food intake and weight gain during high-fat feeding and enhanced sensitivity to the alternative incretin signaling system. Combined antagonism of both GIPR and GLP-1R produced additive effects to mitigate DIO. Acute pharmacological studies using GIPR and GLP-1R agonists demonstrated both peptides reduced food intake, which was prevented by co-administration of the respective antagonists.

conclusionsDisruption of either axis of the incretin system protects against diet-induced obesity in mice. However, combined antagonism of both GIPR and GLP-1R produced additional protection against diet-induced obesity, suggesting additional factors beyond compensation by the complementary incretin axis. While antagonizing the GLP-1 system decreases weight gain, GLP-1R agonists are used clinically to target obesity. Hence, the phenotype arising from loss of function of GLP-1R does not implicate GLP-1 as an obesogenic hormone. By extension, caution is warranted in labeling GIP as an obesogenic hormone based on loss-of-function studies.

Indexed as

AnimalsAnti-Obesity AgentsDiet, High-FatIncretinsMaleMiceMice, Inbred C57BLMice, ObeseObesityWeight GainAnti-Obesity AgentsIncretinsEnergy expenditureFood intakeGIPR antagonistGLP-1R antagonistGlucagon-like peptide 1 receptorGlucose-dependent insulinotropic polypeptide receptor

Identifiers

PMID32029229
PMCPMC6939028
OpenAlexW2991708816

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.